From patchwork Thu Oct 29 23:46:14 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jake Oshins X-Patchwork-Id: 7522701 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 198BF9F37F for ; Thu, 29 Oct 2015 23:48:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4A67F20711 for ; Thu, 29 Oct 2015 23:48:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 386C7206FB for ; Thu, 29 Oct 2015 23:48:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758435AbbJ2XsH (ORCPT ); Thu, 29 Oct 2015 19:48:07 -0400 Received: from o1.f.az.sendgrid.net ([208.117.55.132]:57919 "EHLO o1.f.az.sendgrid.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758211AbbJ2XrB (ORCPT ); Thu, 29 Oct 2015 19:47:01 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:cc:subject:in-reply-to:references; s=smtpapi; bh=ifzB74vMI0DZxxBekBmaMDtOul8=; b=VBTybpfMhctG2ahlT52oyRrU3ZlXh cReXapDItDqLTpq9Iox6w9L5ulNhA+jrIjCOOt9ahhMJP/iARLKn26LTP6TPQZGv KRldvOHfPn7tWHhULfbKRxEDmNRjwiu5V9sWUNkTk23QsGORZWEJd4D+U7MXrL/o 2hjDfDQUDDTAZU= Received: by filter-392.sjc1.sendgrid.net with SMTP id filter-392.7201.5632AFF41B 2015-10-29 23:47:00.211908846 +0000 UTC Received: from jakeoshinsu2.jakeoshinsu2.d1.internal.cloudapp.net (unknown [104.210.40.47]) by ismtpd0007p1las1.sendgrid.net (SG) with ESMTP id -h4xsROgTX-lZ7C4MHDmMw Thu, 29 Oct 2015 23:46:59.591 +0000 (UTC) From: jakeo@microsoft.com To: gregkh@linuxfoundation.org, kys@microsoft.com, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, tglx@redhat.com, haiyangz@microsoft.com, marc.zyngier@arm.com, jiang.liu@linux.intel.com, bhelgaas@google.com, linux-pci@vger.kernel.org Cc: Jake Oshins Subject: [PATCH v4 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle Date: Thu, 29 Oct 2015 23:46:14 +0000 Message-Id: <1446162376-43419-6-git-send-email-jakeo@microsoft.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1446162376-43419-1-git-send-email-jakeo@microsoft.com> References: <1446162376-43419-1-git-send-email-jakeo@microsoft.com> X-SG-EID: lfnueJVzSjg1mfuVqqukVH7tZvRy9mfCIcBnfbfzaMOCur2yf9kZXZoOqTdezZPe2fs9A8V7//fwlC pjzndHGa+59dTRZxmqKKnmnwes8VJW6s73vYIgfre3Qc/VHcHaYr0cis/Suxa8vaAKhLfBfIw4NOAa na/dcwpSQEOLd98= Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY, URIBL_GREY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jake Oshins This patch adds a second way of finding an IRQ domain associated with a root PCI bus. After looking to see if one can be found through the OF tree, it attempts to look up the IRQ domain through an fwnode_handle stored in the pci_sysdata struct. Signed-off-by: Jake Oshins --- drivers/pci/probe.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f441d1b..3d5d7d6 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -671,6 +671,19 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) */ d = pci_host_bridge_of_msi_domain(bus); +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN + /* + * If no IRQ domain was found via the OF tree, try looking it up + * directly through the fwnode_handle. + */ + if (!d) { + if (pci_fwnode(bus)) { + d = irq_find_matching_fwnode(pci_fwnode(bus), + DOMAIN_BUS_PCI_MSI); + } + } +#endif + return d; }